#else
#define AOT_FUNC_ALIGNMENT 16
#endif
-#if defined(TARGET_X86) && defined(__native_client_codegen__)
+#if (defined(TARGET_X86) || defined(TARGET_AMD64)) && defined(__native_client_codegen__)
#undef AOT_FUNC_ALIGNMENT
#define AOT_FUNC_ALIGNMENT 32
#endif
{
#if defined(TARGET_X86)
guint32 offset = (acfg->plt_got_offset_base + index) * sizeof (gpointer);
-
-#ifdef __native_client_codegen__
+#if defined(__default_codegen__)
+ /* jmp *<offset>(%ebx) */
+ emit_byte (acfg, 0xff);
+ emit_byte (acfg, 0xa3);
+ emit_int32 (acfg, offset);
+ /* Used by mono_aot_get_plt_info_offset */
+ emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+#elif defined(__native_client_codegen__)
const guint8 kSizeOfNaClJmp = 11;
guint8 bytes[kSizeOfNaClJmp];
guint8 *pbytes = &bytes[0];
emit_byte (acfg, 0x68); /* hide data in a push */
emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
-#else
- /* jmp *<offset>(%ebx) */
- emit_byte (acfg, 0xff);
- emit_byte (acfg, 0xa3);
- emit_int32 (acfg, offset);
- /* Used by mono_aot_get_plt_info_offset */
- emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
-#endif /* __native_client_codegen__ */
+#endif /*__native_client_codegen__*/
#elif defined(TARGET_AMD64)
+#if defined(__default_codegen__)
/*
* We can't emit jumps because they are 32 bits only so they can't be patched.
* So we make indirect calls through GOT entries which are patched by the AOT
emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) -4);
/* Used by mono_aot_get_plt_info_offset */
emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+#elif defined(__native_client_codegen__)
+ guint8 buf [256];
+ guint8 *buf_aligned = ALIGN_TO(buf, kNaClAlignment);
+ guint8 *code = buf_aligned;
+
+ /* mov <OFFSET>(%rip), %r11d */
+ emit_byte (acfg, '\x45');
+ emit_byte (acfg, '\x8b');
+ emit_byte (acfg, '\x1d');
+ emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) -4);
+
+ amd64_jump_reg (code, AMD64_R11);
+ /* This should be constant for the plt patch */
+ g_assert ((size_t)(code-buf_aligned) == 10);
+ emit_bytes (acfg, buf_aligned, code - buf_aligned);
+
+ /* Hide data in a push imm32 so it passes validation */
+ emit_byte (acfg, 0x68); /* push */
+ emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
+ emit_alignment (acfg, AOT_FUNC_ALIGNMENT);
+#endif /*__native_client_codegen__*/
#elif defined(TARGET_ARM)
guint8 buf [256];
guint8 *code;
* - all the trampolines should be of the same length.
*/
#if defined(TARGET_AMD64)
+#if defined(__default_codegen__)
/* This should be exactly 16 bytes long */
*tramp_size = 16;
/* call *<offset>(%rip) */
emit_byte (acfg, '\x15');
emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
/* This should be relative to the start of the trampoline */
- emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 19);
+ emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset+1) * sizeof (gpointer)) + 7);
emit_zero_bytes (acfg, 5);
+#elif defined(__native_client_codegen__)
+ guint8 buf [256];
+ guint8 *buf_aligned = ALIGN_TO(buf, kNaClAlignment);
+ guint8 *code = buf_aligned;
+ guint8 *call_start;
+ size_t call_len;
+ int got_offset;
+
+ /* Emit this call in 'code' so we can find out how long it is. */
+ amd64_call_reg (code, AMD64_R11);
+ call_start = mono_arch_nacl_skip_nops (buf_aligned);
+ call_len = code - call_start;
+
+ /* The tramp_size is twice the NaCl alignment because it starts with */
+ /* a call which needs to be aligned to the end of the boundary. */
+ *tramp_size = kNaClAlignment*2;
+ {
+ /* Emit nops to align call site below which is 7 bytes plus */
+ /* the length of the call sequence emitted above. */
+ /* Note: this requires the specific trampoline starts on a */
+ /* kNaclAlignedment aligned address, which it does because */
+ /* it's its own function that is aligned. */
+ guint8 nop_buf[256];
+ guint8 *nopbuf_aligned = ALIGN_TO (nop_buf, kNaClAlignment);
+ guint8 *nopbuf_end = mono_arch_nacl_pad (nopbuf_aligned, kNaClAlignment - 7 - (call_len));
+ emit_bytes (acfg, nopbuf_aligned, nopbuf_end - nopbuf_aligned);
+ }
+ /* The trampoline is stored at the offset'th pointer, the -4 is */
+ /* present because RIP relative addressing starts at the end of */
+ /* the current instruction, while the label "." is relative to */
+ /* the beginning of the current asm location, which in this case */
+ /* is not the mov instruction, but the offset itself, due to the */
+ /* way the bytes and ints are emitted here. */
+ got_offset = (offset * sizeof(gpointer)) - 4;
+
+ /* mov <OFFSET>(%rip), %r11d */
+ emit_byte (acfg, '\x45');
+ emit_byte (acfg, '\x8b');
+ emit_byte (acfg, '\x1d');
+ emit_symbol_diff (acfg, acfg->got_symbol, ".", got_offset);
+
+ /* naclcall %r11 */
+ emit_bytes (acfg, call_start, call_len);
+
+ /* The arg is stored at the offset+1 pointer, relative to beginning */
+ /* of trampoline: 7 for mov, plus the call length, and 1 for push. */
+ got_offset = ((offset + 1) * sizeof(gpointer)) + 7 + call_len + 1;
+
+ /* We can't emit this data directly, hide in a "push imm32" */
+ emit_byte (acfg, '\x68'); /* push */
+ emit_symbol_diff (acfg, acfg->got_symbol, ".", got_offset);
+ emit_alignment (acfg, kNaClAlignment);
+#endif /*__native_client_codegen__*/
#elif defined(TARGET_ARM)
guint8 buf [128];
guint8 *code;
arch_emit_static_rgctx_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
{
#if defined(TARGET_AMD64)
+#if defined(__default_codegen__)
/* This should be exactly 13 bytes long */
*tramp_size = 13;
emit_byte (acfg, '\xff');
emit_byte (acfg, '\x25');
emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4);
+#elif defined(__native_client_codegen__)
+ guint8 buf [128];
+ guint8 *buf_aligned = ALIGN_TO(buf, kNaClAlignment);
+ guint8 *code = buf_aligned;
+
+ /* mov <OFFSET>(%rip), %r10d */
+ emit_byte (acfg, '\x45');
+ emit_byte (acfg, '\x8b');
+ emit_byte (acfg, '\x15');
+ emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
+
+ /* mov <OFFSET>(%rip), %r11d */
+ emit_byte (acfg, '\x45');
+ emit_byte (acfg, '\x8b');
+ emit_byte (acfg, '\x1d');
+ emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4);
+
+ /* nacljmp *%r11 */
+ amd64_jump_reg (code, AMD64_R11);
+ emit_bytes (acfg, buf_aligned, code - buf_aligned);
+
+ emit_alignment (acfg, kNaClAlignment);
+ *tramp_size = kNaClAlignment;
+#endif /*__native_client_codegen__*/
+
#elif defined(TARGET_ARM)
guint8 buf [128];
guint8 *code;
{
#if defined(TARGET_AMD64)
guint8 *buf, *code;
+#if defined(__native_client_codegen__)
+ guint8 *buf_alloc;
+#endif
guint8 *labels [3];
+ guint8 mov_buf[3];
+ guint8 *mov_buf_ptr = mov_buf;
+ const int kSizeOfMove = 7;
+#if defined(__default_codegen__)
code = buf = g_malloc (256);
+#elif defined(__native_client_codegen__)
+ buf_alloc = g_malloc (256 + kNaClAlignment + kSizeOfMove);
+ buf = ((guint)buf_alloc + kNaClAlignment) & ~kNaClAlignmentMask;
+ /* The RIP relative move below is emitted first */
+ buf += kSizeOfMove;
+ code = buf;
+#endif
/* FIXME: Optimize this, i.e. use binary search etc. */
/* Maybe move the body into a separate function (slower, but much smaller) */
- /* R11 is a free register */
+ /* MONO_ARCH_IMT_SCRATCH_REG is a free register */
labels [0] = code;
- amd64_alu_membase_imm (code, X86_CMP, AMD64_R11, 0, 0);
+ amd64_alu_membase_imm (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, 0);
labels [1] = code;
- amd64_branch8 (code, X86_CC_Z, FALSE, 0);
+ amd64_branch8 (code, X86_CC_Z, 0, FALSE);
/* Check key */
- amd64_alu_membase_reg (code, X86_CMP, AMD64_R11, 0, MONO_ARCH_IMT_REG);
+ amd64_alu_membase_reg_size (code, X86_CMP, MONO_ARCH_IMT_SCRATCH_REG, 0, MONO_ARCH_IMT_REG, sizeof (gpointer));
labels [2] = code;
- amd64_branch8 (code, X86_CC_Z, FALSE, 0);
+ amd64_branch8 (code, X86_CC_Z, 0, FALSE);
/* Loop footer */
- amd64_alu_reg_imm (code, X86_ADD, AMD64_R11, 2 * sizeof (gpointer));
+ amd64_alu_reg_imm (code, X86_ADD, MONO_ARCH_IMT_SCRATCH_REG, 2 * sizeof (gpointer));
amd64_jump_code (code, labels [0]);
/* Match */
mono_amd64_patch (labels [2], code);
- amd64_mov_reg_membase (code, AMD64_R11, AMD64_R11, sizeof (gpointer), 8);
- amd64_jump_membase (code, AMD64_R11, 0);
+ amd64_mov_reg_membase (code, MONO_ARCH_IMT_SCRATCH_REG, MONO_ARCH_IMT_SCRATCH_REG, sizeof (gpointer), sizeof (gpointer));
+ amd64_jump_membase (code, MONO_ARCH_IMT_SCRATCH_REG, 0);
/* No match */
/* FIXME: */
mono_amd64_patch (labels [1], code);
x86_breakpoint (code);
- amd64_mov_reg_membase (code, AMD64_R11, AMD64_RIP, 12345678, 8);
-
- /* mov <OFFSET>(%rip), %r11 */
- emit_byte (acfg, '\x4d');
- emit_byte (acfg, '\x8b');
- emit_byte (acfg, '\x1d');
+ /* mov <OFFSET>(%rip), MONO_ARCH_IMT_SCRATCH_REG */
+ amd64_emit_rex (mov_buf_ptr, sizeof(gpointer), MONO_ARCH_IMT_SCRATCH_REG, 0, AMD64_RIP);
+ *(mov_buf_ptr)++ = (unsigned char)0x8b; /* mov opcode */
+ x86_address_byte (mov_buf_ptr, 0, MONO_ARCH_IMT_SCRATCH_REG & 0x7, 5);
+ emit_bytes (acfg, mov_buf, mov_buf_ptr - mov_buf);
emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
emit_bytes (acfg, buf, code - buf);
- *tramp_size = code - buf + 7;
+ *tramp_size = code - buf + kSizeOfMove;
+#if defined(__native_client_codegen__)
+ /* The tramp will be padded to the next kNaClAlignment bundle. */
+ *tramp_size = ALIGN_TO ((*tramp_size), kNaClAlignment);
+#endif
+
+#if defined(__default_codegen__)
+ g_free (buf);
+#elif defined(__native_client_codegen__)
+ g_free (buf_alloc);
+#endif
+
#elif defined(TARGET_X86)
guint8 *buf, *code;
#ifdef __native_client_codegen__
#endif
guint8 *labels [3];
-#ifdef __native_client_codegen__
+#if defined(__default_codegen__)
+ code = buf = g_malloc (256);
+#elif defined(__native_client_codegen__)
buf_alloc = g_malloc (256 + kNaClAlignment);
code = buf = ((guint)buf_alloc + kNaClAlignment) & ~kNaClAlignmentMask;
-#else
- code = buf = g_malloc (256);
#endif
/* Allocate a temporary stack slot */
emit_bytes (acfg, buf, code - buf);
*tramp_size = code - buf;
+
+#if defined(__default_codegen__)
+ g_free (buf);
+#elif defined(__native_client_codegen__)
+ g_free (buf_alloc);
+#endif
+
#elif defined(TARGET_ARM)
guint8 buf [128];
guint8 *code, *code2, *labels [16];
sprintf (symbol, "plt");
emit_section_change (acfg, ".text", 0);
- emit_alignment (acfg, 16);
+ emit_alignment (acfg, NACL_SIZE(16, kNaClAlignment));
emit_label (acfg, symbol);
emit_label (acfg, acfg->plt_symbol);
* Emit some padding so the local symbol for the first method doesn't have the
* same address as 'methods'.
*/
+#if defined(__default_codegen__)
emit_zero_bytes (acfg, 16);
+#elif defined(__native_client_codegen__)
+ {
+ const int kPaddingSize = 16;
+ guint8 pad_buffer[kPaddingSize];
+ mono_arch_nacl_pad (pad_buffer, kPaddingSize);
+ emit_bytes (acfg, pad_buffer, kPaddingSize);
+ }
+#endif
+
for (l = acfg->method_order; l != NULL; l = l->next) {
MonoCompile *cfg;
#endif
#ifdef __native_client_codegen__
+#if defined(TARGET_AMD64)
+#define AS_NAME "nacl64-as"
+#else
#define AS_NAME "nacl-as"
+#endif
#else
#define AS_NAME "as"
#endif
projects / mono.git / blobdiff